Early access

Terms of Service

Version October 2, 2026. What changed:

Section 10 now says how Publications are shared: anyone with the link can play a world published from the Desktop App, without an account. It also covers Explore, embeds and multiplayer rooms, and people who play without an account.
Section 9 covers showing Publications on Antelier, and lets Antelier feature Public worlds in its own posts, streams and pages. The short version says so too.
Sections 2, 4 and 7 list every way Claude Code can be signed in, including a gateway token, and how each is billed. Section 7 also says that Antelier does not read your AI credentials, and gives Anthropic's training default for API keys. The short version now says your AI provider's terms apply.
Section 11 adds rules against using Antelier to build a competing product, and against scraping.
New section 20: indemnity. Later sections are renumbered.
Sections 1 and 2 name antelier.dev, where published worlds are served, and state that Antelier LLC is a Missouri limited liability company. Section 9 says what we receive when you publish from the Desktop App.

Earlier version: September 25, 2026. If you accepted an earlier version, we ask you to accept this one when you next sign in.

Antelier is an early-stage product for making games, worlds and interactive experiments. It is operated by Antelier LLC, a Missouri limited liability company. Contact hello@antelier.co.

The short version

Antelier is for adults 18 and older in the United States.
Early access is free. Antelier does not charge you or collect payment details. Your AI provider may charge you under its own terms.
AI runs on your own Claude Code account, under your AI provider's terms. AI can be wrong: review and test what you keep.
You own your content. We use it only to run the features you use and, if you make a world Public, to feature it in Antelier's own posts (section 9). We do not sell it or train AI on it.
Follow the acceptable use rules below. Report problems to hello@antelier.co.

1. About these terms

These Terms of Service ("Terms") are an agreement between you and Antelier LLC, a Missouri limited liability company ("Antelier"). They cover the website at antelier.co, the hosted workspace at preview.antelier.co, published worlds and their files at antelier.co and antelier.dev, the Antelier desktop app, related emails and support. By creating a workspace, signing in, or downloading or using the desktop app, you agree to these Terms. If you do not agree, do not use Antelier.

Operator and party to these Terms: Antelier LLC
State where the company was formed: Missouri
Contact: hello@antelier.co

The Acceptable Use Policy and the Copyright & IP Complaints Policy are part of these Terms. The Privacy Notice explains how we handle information.

2. Definitions

Antelier, we, us: Antelier LLC, a Missouri limited liability company, which operates Antelier.
Service: Everything these Terms cover: the Hosted Service and the Desktop App.
Hosted Service: The parts we run on servers: antelier.co, preview.antelier.co, antelier.dev (where published worlds' files are served, at play.antelier.dev), sign-in, email, hosted projects, Publications and multiplayer rooms.
Desktop App: The Antelier software you download and run on your own computer, including its local server, the Studio, the browser editor and the Unreal connector.
Workspace: Your hosted Antelier account area and the projects linked to it.
Access Credentials: Access links, Google sign-in, recovery keys and files, connection codes and session cookies that open a Workspace or connect the Desktop App.
Early Access: The current free, pre-release period of Antelier.
Your Content: Anything you create, upload, import, type or submit in the Service, including projects, prompts, assets, messages, reports and feedback.
AI Provider: The AI service you connect to Antelier. Today this is Anthropic's Claude, used through Claude Code signed in the way you set it up: with your Claude plan, an Anthropic API key, a cloud provider account that serves Claude (Amazon Bedrock, Google Cloud Vertex AI or Microsoft Foundry), or another sign-in you set up in Claude Code, such as a gateway token, in which case the gateway's operator and its terms also apply.
Output: Content an AI Provider generates in response to your requests.
Third-Party Service: Any product or service we do not operate, including your AI Provider, Unreal Engine, Poly Haven and Google sign-in.
Publication and Remix: A Publication is a version of a project you choose to share through Antelier: a world you publish from the Desktop App, with its page at antelier.co/w/, or a hosted project you publish from your Workspace. A Remix is a copy of a Publication that another person makes when the Publication allows it (section 10).
Player: Anyone who opens or plays a Publication or joins one of its multiplayer rooms, with or without a Workspace.

3. Who can use Antelier

You may use Antelier only if all of these are true:

You are at least 18 years old and old enough to form a binding contract where you live.
You live in the United States. Antelier is not offered in the European Union, the European Economic Area, the United Kingdom or Switzerland.
You are not barred from receiving the Service under US law, and we have not previously ended your access.
You meet your AI Provider's own eligibility rules. Anthropic's consumer terms require users to be at least 18.

Antelier is not for children. Do not create a Workspace for anyone else, including a child. Do not submit children's personal information or use Antelier to host a child-directed experience during Early Access. If we learn that a person under 18 has a Workspace, we will close it and delete its information as described in the Privacy Notice.

4. Early access and costs

Antelier is in Early Access. It is pre-release software. Features can change, break or be removed. There is no Antelier charge during Early Access, and we do not collect payment details. We will not charge you unless you first agree to a separate paid offer that states its price and terms.

Other providers can charge you. Your AI Provider counts or bills Antelier's requests under its own terms and prices, which can change: against your Claude plan's usage limits, or per use for an Anthropic API key or cloud account. A gateway sign-in is counted or billed as the gateway's operator decides (section 7). Unreal Engine is licensed by Epic Games under its own terms, which can include royalties.

We may end Early Access or the Hosted Service. We will give at least 14 days' notice by email before we shut down the Hosted Service, and a way to export your hosted projects, unless law, security or a provider forces a faster change.

5. Your workspace and access

You can open a Workspace with a personal access link, with Google sign-in, or with a recovery key. Keep your Access Credentials private. Anyone who has them can open your Workspace. Do not share a Workspace with another person.

A recovery key restores access. It is not a backup of your projects. We cannot recover a lost recovery key. Export projects you want to keep. Tell us at hello@antelier.co if you think someone else has used your Access Credentials. Signing out everywhere or recovering your Workspace ends other sessions and desktop connections.

6. The desktop app

We give you a personal, limited, non-exclusive, non-transferable, revocable license to install and use the Desktop App on computers you control, to make your own projects, including commercial projects. Open-source parts of the Desktop App are licensed under their own licenses, listed in the notices shipped with it, and nothing in these Terms limits your rights under those licenses.

You may not remove notices; sell, rent or redistribute the Desktop App package; bypass its security, connection or usage limits; or use it to harm others' systems. This does not restrict anything applicable law lets you do regardless of a contract, including lawful interoperability and security research.

The Desktop App runs on your computer and stores its data there. You are responsible for your computer, backups, and the software you install with it, such as Unreal Engine, Git and Claude Code. The Desktop App is not code-signed during Early Access; Windows may warn you before running it.

7. AI features and your AI provider

You bring your own AI Provider. Antelier's AI features run through your own AI Provider account. Today that means Claude Code on your computer, signed in with your Claude plan, an Anthropic API key, a cloud provider account, or another sign-in you set up in Claude Code, such as a gateway token, in which case the gateway's operator and its terms also apply. Your use of your AI Provider is between you and that provider. Its terms, usage policy, age rules, limits and charges apply. Antelier is not a party to that agreement. If Claude Code is signed in with anything other than a Claude plan, the Desktop App asks you to confirm before it uses that sign-in, because those sign-ins can be billed per use. If the Desktop App cannot tell who pays for a sign-in, it asks you who does.

What is sent. When you ask for an AI change, the Desktop App sends your AI Provider what the request needs: your message and the conversation, relevant project files and scene details, and screenshots of your project. This happens from your computer. Antelier does not ask for, read, store or send your AI Provider password, API key or sign-in token; Claude Code uses them on your computer.

Costs. Antelier does not charge for AI. Your AI Provider counts or bills Antelier's requests under its own terms and prices, which can change: against your Claude plan's usage limits, or per use for an Anthropic API key or cloud account. A gateway sign-in is counted or billed as the gateway's operator decides. Check your AI Provider's plan, billing and settings. Antelier's per-turn cost limits are estimates and safety stops, not billing guarantees.

Training. Antelier does not train AI models on Your Content. Whether your AI Provider trains on your sessions depends on your agreement and settings with that provider. With a Claude plan, Anthropic trains on consumer sessions unless you turn model training off in your Claude privacy settings. An Anthropic API key, a cloud account or a gateway is covered by your agreement with Anthropic, the cloud provider or the gateway's operator, not by those consumer-plan settings. Anthropic says that, by default, it does not train its models on what is sent to it under its commercial terms, which cover Anthropic API keys.

Output. AI Output can be wrong, incomplete, insecure, or similar to what others receive. It is not guaranteed to be unique, protected by copyright or free of third-party rights. Review, test and keep only what you want. You decide what to keep, publish or ship, and you are responsible for that choice. As between you and Antelier, we claim no ownership of Output; your AI Provider's terms decide what rights it gives you. Antelier's checks and playtests test only the stated behavior. A passing check is not a guarantee of safety, correctness or fitness for a purpose. Simulations are exploratory models, not validated predictions or professional advice.

Antelier AI credits (planned; not active). Antelier may later offer paid plans that include AI usage: Antelier would buy AI from a provider such as Anthropic, and you would spend credits instead of using your own Claude plan. This is not active. While Antelier billing is off, as it is during Early Access, no paid plan is offered and nothing is charged. Bring-your-own Claude will stay available. Before any paid plan starts, we will publish its terms and show you, before you buy: the price, what a credit buys, how credits are used and when they expire, renewal and how to cancel, refunds, and which AI provider receives your content and on what terms. You would accept those terms separately.

Hosted AI. The Hosted Service does not generate with AI during Early Access. If we add hosted AI, we will name the provider before you use it.

8. Game engines and other services

Third-Party Services have their own terms. You are responsible for following them. We do not control them, and they can change or stop working with Antelier.

Unreal Engine. You need your own Unreal Engine license from Epic Games. Epic's license restricts using its technology as input to generative AI programs that train on that input. If you use Antelier with Unreal projects, turn off model training in your Claude privacy settings first, and do not send Epic or Fab content that its license bars from AI use.
Unity and Roblox. No Unity or Roblox connector is offered. Their terms restrict competing and AI uses; we will review them before offering one.
Poly Haven. The asset library downloads CC0 assets from Poly Haven directly to your computer. Antelier records each asset's source and license.
Google. Google sign-in is provided under Google's terms.

9. Your content

You keep your rights. You own Your Content, to the extent it can be owned. These Terms do not transfer it to us.

Permission you give us. For Your Content on the Hosted Service, you give Antelier a worldwide, non-exclusive, royalty-free license to host, store, copy, process, transmit and display it only as needed to provide the features you use, to keep the Service secure, and to comply with law. For a Publication, this includes showing it on its page, in embeds, on Explore and in previews (its title, creator credit, poster, trailer and share images), and reviewing it, until you withdraw it. This license ends when you delete the content or your Workspace, except for copies kept in backups for the periods the Privacy Notice states, copies we must keep by law, Remixes others made under your permission (section 10), and promotional posts already made under the next paragraph. We do not sell Your Content, license it to others (except through the optional Data Program, if you join it), or use it to train AI models. Projects in the Desktop App stay on your computer and are not sent to us unless you publish them. When you publish one, we receive the files of its newest version, its title, whether it is Unlisted or Public, and its poster and trailer if it has them. When you connect one to your Workspace, we receive only its title and an ID.

Featuring Public worlds. If you make a Publication Public, you also allow Antelier to show it, with your creator credit, in Antelier's own posts, streams, newsletters and pages that promote Antelier. This permission lasts until you unpublish the Publication, make it Unlisted, or ask us to stop at hello@antelier.co. We then stop new uses promptly, but we do not have to remove posts already made. We never use an Unlisted Publication this way without your written permission, and we do not use any Publication in paid advertising without your written permission.

Your promises. You have the rights and permissions needed for Your Content, including client material and imported assets. Your Content and your use of the Service follow these Terms and the law.

Feedback. If you send ideas or suggestions about Antelier, we may use them without paying you. This does not give us rights in your projects.

10. Publishing and remixing

You choose whether to publish a project. When you publish a world from the Desktop App, you choose whether it is Unlisted or Public. Anyone with the link can open, play and share it without an Antelier account. Public worlds can also appear on Explore; we may review them before listing them. Anyone may show a world on another website with the embed link Antelier provides. Worlds can offer multiplayer rooms that players join from a link. Worlds are served from antelier.co and antelier.dev. Every world published from the Desktop App offers a Remix download: anyone with its link can download a copy of its project files.

A hosted project you publish from your Workspace is available only to people signed in to Antelier who have its link, and you choose whether to allow Remixes.

When a Publication allows remixing, you give every person who can open that Publication a non-exclusive, royalty-free license to copy and change it within Antelier, and to publish their Remix within Antelier, with the credit Antelier records. Publish a world from the Desktop App, or allow remixing of a hosted project, only if you have the right to grant this for every part, including third-party assets. Withdrawing a Publication stops new access on the Hosted Service. It does not undo copies, downloads or Remixes already made.

Players. If you play a Publication or join a room without a Workspace, the Acceptable Use Policy applies to you, and sections 18, 19 and 23 apply to your use.

11. Acceptable use

Follow the Acceptable Use Policy. In short, do not: break the law; infringe others' rights; create or share sexual content involving minors; share intimate images of real people without consent; harass, threaten or impersonate others; create malware or attack systems; access projects or accounts without permission; misuse your AI Provider in breach of its usage policy; or overload or evade the Service's limits. Anyone shown in an intimate image shared through Antelier without consent can ask us to remove it; we act on valid requests within 48 hours (how to ask).

Competing products, copying and scraping. You may not use the Service, the Desktop App, or the kit, templates, prompts, documentation, playbooks or other materials Antelier provides to build, train or improve a product or service that competes with Antelier, or to benchmark Antelier in order to copy it. You may not copy Antelier's features, interface or materials for that purpose. You may not scrape or bulk-extract the Service, or reverse engineer it, except where the law allows it despite this rule. These limits never cover Your Content: the worlds, games and simulations you make with Antelier are yours, and making, publishing, selling or shipping them, including the parts of Antelier's kit they contain, is never a competing use. These limits also do not restrict your rights under the licenses of open-source parts (section 6), or playing, embedding or downloading a Remix of a Publication as Antelier offers it.

These Terms do not prohibit lawful independent development that does not use Antelier's materials, lawful interoperability, honest reviews or comparisons, or security reports made in good faith.

12. Copyright and IP complaints

We respond to notices of claimed copyright infringement under the Digital Millennium Copyright Act, and to other good-faith IP complaints, as described in the Copyright & IP Complaints Policy. Send notices to hello@antelier.co with the subject "Copyright notice." We remove or disable material when appropriate, accept counter-notices, and end the Workspaces of repeat infringers in appropriate circumstances.

13. Antelier's rights

The Service, its software, design, and the Antelier name and logo belong to Antelier LLC or its licensors. These Terms do not give you rights in them except the license in section 6.

14. Privacy

The Privacy Notice explains what we collect, why, who receives it, how long we keep it and your choices. The Cookies & storage notice lists what the site stores in your browser.

15. Data program

Antelier is building an optional Data Program. It is not open, and nothing is collected or sold for it. If it opens:

It will be optional and off by default, with a separate consent for each purpose. Accepting these Terms, signing up or signing in grants no license for the program. Declining will not affect your access.
Only people 18 or older in the United States can join.
It could include only material you made yourself and own, and player inputs on eligible hosted worlds with each player's own consent. A creator's consent never covers players.
It will never include account data, prompts, AI Provider output or transcripts (including anything Claude wrote), content from engines, stores or providers that bar AI training (including Unreal Engine, Epic and Fab content), client or confidential material, other people's personal information, data from or about anyone under 18, or anything collected before you opted in.
You would keep ownership and give Antelier a non-exclusive license limited to the purposes named on the consent screen, sublicensable only to program recipients (AI research organizations and dataset marketplaces) under written restrictions, and delivered de-identified.
You could leave at any time. Leaving stops collection and removes your material from future releases within the period the program terms state. Models already trained cannot be undone.
Any payment would be a share of program revenue or credits, with a minimum payout and no promise of earnings. Tax information is required before payout.
Material program changes would need your renewed consent.

The full program terms will be published at least 14 days before the program opens and shown before you join.

16. Changes

We may change the Service. If we change these Terms, we will post the new version with its date. For material changes, we will tell you by email or in the product at least 14 days before they take effect, unless a change is required sooner by law or security, and we will ask you to accept them where required. If you do not agree, stop using the Service and export your projects.

17. Suspension and ending

You can stop using Antelier at any time and ask us to delete your Workspace.

We may suspend or end your access if you break these Terms, if law requires it, if your use risks harm to others or to the Service, or if Early Access ends. When we act, we will tell you why and how to respond, unless law or safety prevents it. You can ask us to review the decision by writing to hello@antelier.co. When practical, we will give you a chance to export your hosted projects.

Sections 7 (Output), 9 (license limits, backups and promotional posts already made), 10 (Remixes already made), 13, 18, 19, 20, 22 and 23 survive the end of these Terms.

18. Disclaimers

To the fullest extent the law allows, the Service is provided "as is" and "as available," without warranties of any kind, express or implied, including warranties of merchantability, fitness for a particular purpose, title, non-infringement, accuracy and uninterrupted or error-free operation. We do not warrant that Output, checks or playtests are correct, or that the Service will keep your data safe from loss. Keep your own backups. Some places do not allow these exclusions, so some may not apply to you.

19. Limitation of liability

To the fullest extent the law allows: (a) Antelier is not liable for indirect, incidental, special, consequential, exemplary or punitive damages, or for lost profits, revenue, data or goodwill; and (b) Antelier's total liability for all claims about the Service is limited to the greater of the amount you paid Antelier in the 12 months before the claim or US$100. These limits do not apply to liability that cannot be limited by law.

20. Indemnity

To the extent the law allows, you will reimburse Antelier for reasonable costs, including legal fees, of third-party claims that arise from Your Content that you did not have the right to use or from your violation of law. We will tell you about the claim promptly and let you take part in the defense.

21. Export controls and sanctions

You will follow US export control and sanctions laws. You may not use the Service if you are in a country subject to comprehensive US sanctions or are on a US government restricted-party list.

22. General

These Terms, with the rules and policies they include, are the whole agreement between you and Antelier about the Service. If a court finds part of them unenforceable, the rest stays in effect. Not enforcing a term is not a waiver. You may not transfer these Terms without our consent. We may transfer them to a successor to the Service, including in a merger, reorganization or sale of assets, with notice to you. On September 25, 2026, these Terms and the Service were transferred to Antelier LLC under this section of the previous version. We may send notices by email to the address linked to your Workspace or by posting in the product. Nothing in these Terms limits rights you have under laws that cannot be changed by contract.

23. Disputes and governing law

Missouri law governs these Terms and any dispute about the Service, without regard to conflict-of-laws rules. Before filing a claim, contact us at hello@antelier.co and give us 30 days to try to resolve it. Either of us may bring an individual claim in small-claims court. Otherwise, claims must be brought in the state courts of St. Louis County, Missouri, or the United States District Court for the Eastern District of Missouri, and you and Antelier consent to their jurisdiction. Nothing here takes away rights that the law where you live gives you and that a contract cannot waive.

24. Contact

Questions, reports, complaints and requests: hello@antelier.co.